%0 Journal Article %A Anderson, Joel %T On Compact Perturbations of Operators %J Canadian journal of mathematics %D 1974 %P 247-250 %V 26 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-024-3/ %R 10.4153/CJM-1974-024-3 %F 10_4153_CJM_1974_024_3